Radio frequency power amplifier module
US-2024048106-A1 · Feb 8, 2024 · US
with variable factor of coupling
with variable factor of coupling · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01P5/04 |
| Official title | with variable factor of coupling |
| Display label | with variable factor of coupling |
| Total patents | 279 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 22 |
| 2016 | 19 |
| 2017 | 26 |
| 2018 | 31 |
| 2019 | 47 |
| 2020 | 29 |
| 2021 | 21 |
| 2022 | 22 |
| 2023 | 27 |
| 2024 | 16 |
| 2025 | 16 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Structure of transmission line
US-2017365905-A1 · Dec 21, 2017 · US
Printed circuit board and optical module
US-2017331250-A1 · Nov 16, 2017 · US
Compensated electromagnetic coupler
US-2017317395-A1 · Nov 2, 2017 · US
Tunable electromagnetic coupler and modules and devices using same
US-2017317396-A1 · Nov 2, 2017 · US
Reducing coupling coefficient variation using intended width mismatch
US-9806395-B2 · Oct 31, 2017 · US
Tunable microwave devices with auto-adjusting matching circuit
US-9768752-B2 · Sep 19, 2017 · US
Phase shifting by mechanical movement
US-2017235056-A1 · Aug 17, 2017 · US
Wideband slide screw impedance tuner
US-9716483-B1 · Jul 25, 2017 · US
Adjustable power divider and directional coupler
US-9698463-B2 · Jul 4, 2017 · US
High power slide screw tuners
US-9666928-B1 · May 30, 2017 · US
Structure of dual directional couplers for multiple-band power amplifiers
US-9647314-B1 · May 9, 2017 · US
Coplanar waveguide transmission line structure configured into non-linear paths to define inductors which inhibit unwanted signals and pass desired signals
US-9647310-B2 · May 9, 2017 · US
Waveguide converter and waveguide conversion method
US-2017104258-A1 · Apr 13, 2017 · US
Compact two probe impedance tuner
US-9620842-B1 · Apr 11, 2017 · US
System and method for a directional coupler with a combining circuit
US-9608305-B2 · Mar 28, 2017 · US
Mobile guided surface waveguide probes and receivers
US-2017077583-A1 · Mar 16, 2017 · US
Mobile guided surface waveguide probes and receivers
US-2017077755-A1 · Mar 16, 2017 · US
On-chip vertical three dimensional microstrip line with characteristic impedance tuning technique and design structures
US-9553348-B2 · Jan 24, 2017 · US
Excitation and use of guided surface waves
US-2016359336-A1 · Dec 8, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01P5/04?
- CPC H01P5/04 is the Cooperative Patent Classification code for “with variable factor of coupling.”
- How many patents are filed under CPC H01P5/04 (with variable factor of coupling)?
- Our database includes 279 publications tagged with this CPC code.
- Is patent activity under CPC H01P5/04 growing?
- Publication counts under this code: 16 in 2024 vs 16 in 2025 (latest complete years).